1. Nurse, NICU 2, Samsung Medical Center, Seoul, Korea.
2. Nursing Director, NICU 2, Samsung Medical Center, Seoul, Korea.
3. ANP, NICU 1, Samsung Medical Center, Seoul, Korea.
4. Clinical Professor, Sungkyunkwan University Graduate School of Clinical Nursing Science, Seoul, Korea.
5. Nursing Director, NICU 1, Samsung Medical Center · Concurrent Professor, Sungkyunkwan University Graduate School of Clinical Nursing Science, Seoul, Korea.